Local Motions of Organic Pollutants in Soil Components, as Studied by 2H NMR

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• 作者：Jincheng Xiong ; Herman Lock ; I-Ssuer Chuang ; Camille Keeler ; and Gary E. Maciel
• 刊名：Environmental Science & Technology
• 出版年：1999
• 出版时间：July 1, 1999
• 年：1999
• 卷：33
• 期：13
• 页码：2224 - 2233
• 全文大小：165K
• 年卷期：v.33,no.13(July 1, 1999)
• ISSN：1520-5851

文摘

²H NMR spectra and interpretations are presented on aseries of samples, each consisting of a deuterium-labeledorganic pollutant (trichloroethylene, acetone, pyridine,benzene, or ethylene glycol) adsorbed on a soil component(montmorillonite clay or humic acid). Spectra wereobtained over a wide temperature range and using twovalues of the quadrupolar echo delay period. Computersimulations of line shapes resulting from various forms oflocal motion of C-²H moieties provide useful guidelinesfor interpreting the experimental results. In a few cases,detailed line shape simulations are given. This approach isattractive for elucidation of the detailed motional behaviorsof organic pollutants adsorbed in soil.